ignition lexus LS400 2000 Engine / LEXUS 2000 LS400 (OM50533U) Owner's Guide

GAUGES, METERS AND SERVICE REMINDER INDICATORS
58

Low fuel level warning light
The gauge is displayed when the ignition switch is
on and indicates the approximate quantity of fuel
remaining in the tank.
It is a good idea to keep the tank over 1/4 full.
If the fuel level approaches ºEº or the low fuel level
warning light comes on, fill the fuel tank as soon as
possible.
On inclines or curves, due to the movement of fuel in the
tank, the fuel gauge needle may fluctuate or the low fuel
level warning light may come on earlier than usual.
If the fuel tank is completely empty, the malfunction
indicator lamp comes on. Fill the fuel tank immediately.
The indicator lamp goes off after driving several times.
If the indicator lamp does not go off, contact your Lexus
dealer as soon as possible.
See the inner back cover for fuel capacity and
recommended fuel selection.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
59
ENGINE COOLANT
TEMPERATURE GAUGE
13L002±2

Normal range
The gauge indicates the engine coolant temperature
when the ignition switch is on. The engine operating
temperature will vary with changes in weather and
engine load.
If the needle points to the red zone or higher, stop your
vehicle and allow the engine to cool.
Your vehicle may overheat during severe operating
conditions, such as:
 Driving up a long hill on a hot day.
 Reducing speed or stopping after high speed driving.
 Idling for a long period with the air conditioning on in stop±and±go traffic.
 Towing a trailer.
NOTICE
Do not remove the thermostat in the engine
cooling system as this may cause the engine to
overheat. The thermostat is designed to control the flow of coolant to keep thetemperature of the engine within the specifiedoperating range.
Do not continue driving with an overheatedengine. See ºIf your vehicle overheatsº onpage 356.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
65
(a) Brake System Warning Light
This light comes on in the following cases when the
ignition key is turned on.
When the parking brake is applied ...
 When the brake fluid level is low ...
Have your vehicle checked at your Lexus dealer in
the following cases:
The light does not come on even if the parking brake is
applied with the ignition ªONº.
CAUTION
If the light does not go out even after the parking brake
is released during the engine running, immediately stop
your vehicle at a safe place and contact your Lexus
dealer. In this case, the brakes may not work properly
and your stopping distance will be longer. Depress the
brake pedal firmly.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
66
(b) Driver's Seat Belt Reminder Lightand Buzzer
This light and buzzer remind you to buckle up the driver's
seat belt.
Once the ignition key is turned to ºONº or ºSTARTº, the
reminder light flashes and buzzer sounds if the driver's
seat belt is not fastened. Unless the driver fastens the
belt, the light stays flashing and the buzzer stops after
about 4 to 8 seconds.
(c) Front Passenger's Seat Belt Reminder Light
This light reminds you to buckle up the front passenger's
seat belt.
Once the ignition key is turned to ºONº or ºSTARTº, the
reminder light flashes if a passenger sits in the front
passenger seat and does not fasten the seat belt.
Unless the front passenger fastens the belt, the light
stays flashing.
If luggage load is placed on the front passenger seat,
depending on its weight and how it is placed on the seat,
built±in sensors in the seat cushion may detect the
pressure, causing the reminder light to come on.
(d) SRS Warning Light
The indicators come on when the ignition key is
turned to the ºACCº or ºONº position. It goes off
after about 6 seconds. This means the SRS airbags
and front seat belt pretensioners are operating
properly.
The SRS warning light system monitors the airbag
sensor assemblies, inflators, seat belt pretensioners,
warning light, interconnecting wiring and power sources.
If either of the following conditions occurs, this indicates
a malfunction somewhere in the parts monitored by the
warning light system. Contact your Lexus dealer as
soon as possible to service the vehicle.
 When the ignition key is turned to the ªACCº or ªONº
position, the light does not come on, remains on or
flashes.
 The light comes on or starts flashing while driving.
If the light stays on, it indicates that the driver and front
passenger airbags fail. If the light flashes, the side
airbags and/or seat belt pretensioners fail.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
67
(e) Discharge Warning Light
This light warns that the battery is being discharged.
If it comes on while you are driving, stop the vehicle, turn
off the engine, and check for the cause. Look first at the
engine drive belt.
If it is loose or broken, the generator will not charge
the battery properly.
 If the belt is O.K., there is a problem somewhere in the
charging system.
The engine ignition will continue to operate, however,
until the battery is discharged. Turn off the air
conditioning, blower, radio, etc., and drive directly to the
nearest Lexus dealer or repair shop.
NOTICE
Do not continue driving if the engine drive belt is broken or loose.
(f) Malfunction Indicator Lamp
This lamp comes on in the following cases.
a. The fuel tank is completely empty. (See ºFuel gaugeº
on page 57 for instructions.)
b. The fuel tank cap is not tightened securely. (See
ºFuel tank capº on page 114 for instructions.)
c. There is a problem somewhere in your engine
electrical system, automatic transmission electrical
system or electronic throttle control system.
If it comes on while you are driving in case ªc.º, have your
vehicle checked/repaired by your Lexus dealer as soon
as possible.
If this lamp comes on and the engine speed does not
increase with the accelerator pedal depressed down to
about the middle position, there may be a problem
somewhere in your electronic throttle control system.
At this time, if you depress the accelerator pedal more
firmly and slowly, you can drive your vehicle at low
speeds. Have your Lexus checked by your Lexus dealer
as soon as possible.
Even if the abnormality of the electronic throttle control
system is corrected during low speed driving, the system
may not be recovered until the engine is stopped and the
ignition key is turned to ªACCº or ªLOCKº position.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
68
(g) ºABSº Warning Light
The light comes on with the ignition key turned to ªONº.
If the anti±lock brake system and the brake assist
system work properly, the light goes out after a few
seconds. Thereafter, if either of the systems
malfunctions, the light comes on.
When the ªABSº warning light is on (and the brake
system warning light is off), the anti±lock brake system,
the brake assist system, the traction control system
and/or the vehicle skid control system do/does not
operate, but the brake system still operates
conventionally.
When the ªABSº warning light is on (and the brake
system warning light is off), the anti±lock brake system
does not operate so that the wheels could lock up during
a sudden braking or braking on slippery road surfaces.
If the following conditions occur, this indicates a
malfunction somewhere in the parts monitored by
the warning light system. Contact your Lexus
dealer as soon as possible to service the vehicle.
 The light does not come on with the ignition key
turned to ªONº, or remains on.
 The light comes on while driving.
If the light lit during driving goes out and does not come
on again, it is a normal operation.
(h) Open Door Warning Light
This light remains on until all the doors are completely
closed.
(i) Low Fuel Level Warning Light
This light comes on when the fuel level in the tank
becomes nearly empty. F ill the tank as soon as possible.
On inclines or curves, due to the movement of fuel in the
tank, the low fuel level warning light may come on earlier
than usual.
(j) Key Reminder Buzzer
This buzzer reminds you to remove the key when you
open the driver's door with the ignition key in the ºACCº
or ºLOCKº position.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
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How to check all the service reminder
indicators
(except the low fuel level warning light):
1. Apply the parking brake.
2. Open the door.
The following service reminder indicator should come
on. It goes off when you close the door completely.
3. Turn the ignition key to ºACCº.
The following service reminder indicator should come
on. It goes off after 6 seconds.
4. Turn the ignition key to ºONº.
The following service reminder indicators should come
on.

or
or

or
The following service reminder indicators go off after 3
seconds.

or
If any service reminder indicator or warning buzzer does
not function, either the bulb is burned out or circuit is in
need of repair. Have it checked by your Lexus dealer as
soon as possible.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
71
(a) Cruise information
13L049±1
The following information is shown with the ignition
switch turned on. Each time you push the ºMODEº
button, the displayed information is changed.
Available driving distance
 Average fuel consumption
 Current fuel consumption
 Average fuel consumption after being refueled
 Driving distance after being refueled
 Elapsed time
 Average vehicle speed
The displayed values of cruise information indicate the
general driving condition, so those may not show
precise and actual condition. Available driving distance

GAUGES, METERS AND SERVICE REMINDER INDICATORS
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The current fuel consumption is calculated and
displayed
based on the driving distance and the fuel
consumption for 2 seconds with the engine running.
The value is updated every 2 seconds.
If you are driving at low speeds just before stopping, the
accurate figure may not be shown.
 Average fuel consumption after being
refueled
W29W29
The average fuel consumption after being refueled
with more than 10 L (2.6 gal., 2.2 lmp.gal.) is
calculated and displayed based on the total driving
distance and the total fuel consumption after being
refueled.
The value is updated every 10 seconds.
When refueling, be sure to stop your vehicle and turn the
ignition switch off. Driving distance after being refueled

GAUGES, METERS AND SERVICE REMINDER INDICATORS
74
W30W30
The driving distance after being refueled with more
than 10 L (2.6 gal., 2.2 lmp.gal.) is displayed.
When refueling, be sure to stop your vehicle and turn the
ignition switch off.
 Elapsed time
W31W31
The total time during the engine running is
displayed.
When the engine is started again after the ignition is off,
the driving time is added to the previous value. Up to 99
hours 59 minutes can be displayed. When the driving
time exceeds 99 hours 59 minutes, the display returns
to 0 and recounting starts.
To count from the beginning, push the ºRESETº button.
Average vehicle speed
W32W32
The average vehicle speed is calculated and
displayed based on the total driving distance and
the total driving time with the engine running.
The displayed value is updated every 10 seconds.
To calculate from the beginning, push the ºRESETº
button.